This site provides information on the Persepolis Fortification Archive project based at the Oriental Institute of the University of Chicago.

Monday, May 04, 2009

Ancient Persian Archive Digitized with Support of Mellon Foundation

Since January, 2007, the Andrew W. Mellon Foundation has supported a collaboration between the West Semitic Research Project (WSRP), at the University of Southern California and the Persepolis Fortification Archive Project, making two kinds of very high-quality images of Persepolis Fortification tablets and distributing the images on line. Bruce Zuckerman and his WSRP team brought to the collaboration more than thirty years of experience with high-quality imaging of West Semitic documents and inscriptions, using conventional and digital techniques. WSRP has been distributing images since 2001 via the robust, easy-to-use application InscriptiFact. More than 8,700 images of more than 300 Fortification tablets will soon be available through InscriptiFact, and more will be displayed at frequent intervals. The following announcement and video clip describe some of the work under way at the Oriental Institute. The PFA Project expects to issue another announcement soon, focusing on the work WSRP-PFA/OI collaboration.

The Oriental Institute at the University of Chicago is using modern technology to digitally record thousands of tablets that, as they are being pieced together, tell an unusually detailed story of the Persian Empire.

These ancient tablets from the palaces of Persepolis include pieces of language and art from the center of the Persian Empire, all made when it extended from India and Central Asia to Egypt and the Mediterranean. Most have texts in impressed cuneiform characters, many them have inked texts in Aramaic writing and almost all of the tablets have seal impressions. They are now being recorded and distributed with digital processes that will allow scholars and viewers across the world to examine them as if they had picked them up and rotated under a light.

With a substantial grant from the Andrew W. Mellon Foundation, a team of researchers began work in 2007. Now, with a second Mellon grant, the team will continue this work through 2010. By that time researchers hope to have about 10,000 tablets and fragments recorded.

Gil Stein, Director of the Oriental Institute, where the tablets are kept, is principal investigator along with Matthew Stolper, John A. Wilson Professor in the Oriental Institute. Other team members and co-principal investigators are Annalisa Azzoni at Vanderbilt University, Elspeth Dusinberre at the University of Colorado, Mark Garrison at Trinity University, Wouter Henkelman at the Free University of Amsterdam, and Bruce Zuckerman and members of the West Semitic Research Project at the University of Southern California. The team collaborates in person, but also electronically.

The tablets being digitized come from the Persepolis Fortification Archive, some 30,000 administrative tablets and fragments that Oriental Institute archaeologists recovered in 1933 at Persepolis, the ruined palaces where the kings of the ancient Persian Empire held court. Since 1936 they have been on loan from Iran to the Oriental Institute for analysis and recording.

“They were written, sealed and filed in a short span of time, between 509 and 493 B.C., in the middle of the reign of the Achaemenid Persian king Darius I,” Stein said. “The oldest Greek tragedy of Aeschylus, and the first Greek history of Herodotus tell us about the reign of Darius, but they don’t tell us anything like this. The administration that these documents record touched every level of society, from lowly workers through bureaucrats and governors to the royal family itself,” he said.

Part of the collection has been recorded, and many of the tablets have been returned to Iran, but the tablets have challenged scholars since their discovery. Only one other document of its kind had been found before the discovery of the archive, making the comparison, reading and understanding of the archive’s tens of thousands of pieces difficult.

Matthew Stolper, Professor at the Oriental Institute, examines a tablet on loan from the government of Iran that has been digitized.

“It is no exaggeration to say that this knowledge has transformed every aspect of modern study of the languages, history and society, institutions and art of the Achaemenid Persian Empire,” Stolper said. “No serious treatment of the Achaemenid Empire can any longer omit the perspectives provided by the Fortification Archive.”

As the project continues, scholars will be able to better analyze the information available in the archive. Online presentation of images of the tablets, images of the seal impressions and editions of the texts will allow researchers to be able to look at each piece, compare and connect it with other pieces, and to assemble and work with the archive as a whole system.

How the recording works

The phase of the project supported by the Mellon grants is a close collaboration between the Oriental Institute at the University of Chicago and the West Semitic Research Project at the University of Southern California. This phase captures and distributes two kinds of high-quality images of Persepolis Fortification tablets.

One set of images is made with a high-resolution, large-format scanning camera with polarized and filtered lighting. The lighting compensates for some of the staining, glare and fading that problematic in seeing inked texts.

The second set of images is captured with Polynomial Texture Mapping (PTM) apparatuses, using a technology developed by Hewlett Packard Labs and Cultural Heritage Imaging. Only a dozen or so of these apparatuses exist, and two of them are recording Persepolis tablets in the basement of the Oriental Institute. A computer controls the camera in each device, making a set of 32 distinctly lighted views of each document. Each image set is combined by a software application in such a way that viewers can control the apparent direction, angle and intensity of the light falling on the object, using a computer mouse just as if they were handling the original object under a desk lamp.

High-resolution images of about 200 Persepolis Fortification texts are available on InscriptiFact, on the Web site of the West Semitic Research Project. Several hundred more will be available soon. Images of about 150 more Persepolis tablets, along with editions, and analytical tools, will soon be released on the On-Line Cultural Research Environment (OCHRE), the archaeological and textual database and presentation application developed at the Oriental Institute and maintained by the University of Chicago Library.